Punch-press



G. J. BLUM.

PUNCH PRESS.

APPLICATION FILED S'EPT. 5, 1919.

1,382,464. PatentedJune 21,1921.

4 SHEEIS-SHEET 1.

l/ZU6/ZZZ7" George J- B/u-m MM MQ 5. LBLUM.

PUNCH PRESS.

APPLICATION FILED SEPI- 5, 1919.

Patented June 21, 1921.

4 SHEETS-SHEET 2.

tfia

Gear 6 J B/um GQJ. BLUM.

PUNCH PRESS.

APPLICATION FILED SEPT: 5, 1919.

Patented June 21, 1921.

4 SHEETSSHEET 4.

UNITED ST PATENT OFFICE.

GEORGE J. BLUIE, OE CHICAGO, ILLINUIIfi, ASSIGNOR T ARM-Ta'TRONG-BLUM MFG COMPANY, OF CHICAGQ, ILLINOIS, A CORPORATION OF ILLINOIS.

PUNCH-PRESS.

Application filed. September To all whom it may concern Be it known that if, GEORGE J. BLUM, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certamnew and use ful Improvements in Punch-Presses, of which the following is a specification.

My invention relates to machinery for bending, cutting, punching, shearing and similar operations on metal plates or structural shapes and more specifically to an unproved press for performing these opera tions.

One of the objects of my invention 1s to make a press entirely of rolled material or materialof standard shapes and sizes, using no special castings of any sort.

Another object is to provlde a machlne having a wide range of adjustability as to the leverages available so that forces of widely varying magnitudes may be readily obtainable for work of various sorts.

Another object is to provide a machlne which can be quickly and easily equipped with tools for performing almost any sort of operation upon the material such as cutting, bending, punching, shearing, etc.

An advantage of the construction it employ is that a plurality of tools for performa large number of different operatlons caii be independently mounted on the machine and used either simultaneously or successively to perform complicated shaping operations with a minimum of expenditure of time and energy.

Further objects and advantages of my nvention will become apparent as the description proceeds.

in the accompanying drawings, Figure l is a side and Fig. 2 an end elevation of a full size or double standard machine embodying the principles of my invention. F 3 is a side view on a somewhat larger scale of the main bars with the yokes and ecentrics. Fi 4i a section on the line lfl of Fig. through one of the yokes and Fig. 5 is a section on the line 55 of Fig. 4. Figs. 6, 7 and 8 show a few examples of the type of work the machine may be used to perform. 9 is a side elevation of a similar type of machine equipped with only one yoke. 10 is a perspective detail of the rear end of the upper arm of the machine illust ted in Fig. 9.

A device according to my invention is es- Specification of Letters Patent.

Patented June 21, 1921. 5, 1919. Serial No. 321,888.

sentially a blank frame comprising two main arms extending in parallelism, and means for moving said arms toward and away from each other. In the embodiment illustrated in Fig. l, l have shown two yokes with link and eccentric means and a carrying framework adapted to support them in spaced relation. The main bars themselves are supported by the yokes in a manner to be hereinafter described.

As illustrated in Figs. 1 and 5, inclusive, the supporting framework comprises a pair of standards 10 and 11, each having a pair of slightly divergent legs, the legs 12 and 13 of the standard 11 each having an upper vertical portion 1%, an intermediate inclined portion 15 and a lower vertical portion 16. Suitable spacing tubes 17 and 18 are clamped between legs 12 and 13 by bolts 19 to hold the legs rigidly in spaced relation.

1 have illustrated a pair of angle bars 20 and 21 held in spaced relation by suitable sleeves 22 and bolts and adapted to serve as a base or pedestal for the machine. The lower vertical portions 16 of the legs of each standard pass down inside the vertical flanges of these angle bars and are clamped thereto by suitable retaining plates. rom diagonally opposite legs of the standards 10 and 11, horizontal extension arms 2% and 25 bifurcated for attachment at spaced points to the lower vertical sections 16, each extend past the alined leg on theother standard. The bolts 26 at the righthand end of F 1 pass through both clamping plates 27 and 28 (see Fig. 2), the first of whi h is held in alinement by spacer block 29 and engages the angle bar 20 to clamp it to the standard, and the second of which clamps the arm 24 between it and the section 16. The clamping attachment at the bifurcated end of the arm comprises a single bolt -30 and a single plate 31 held in alinement by suitable spacer block. It will be seen that each standard 10 and 11 constitutes a rigid unit with a horizontal arm projecting in the direction of the opposite standard and that these standards may be clamped together in any spaced relationship on any suitable base.

A yoke 33 is supported at the upper end of each standard. As these yokes are duplicates a detailed description of one will be suificient. Each yoke comprises a pair of drag links 34 perforated at each end to receive the eccentrics 35. The lower eccen- 1 poses of guidance for a 4-0: In rigs. a and 5, l: have ill.

trio comprises a central eccentric portion 36 and two alined end portions 3'4 passing the links otthe yolie the a lower beam 40 are clamped in spaced 1 tion between blocks M held in place by any suitable means herein illustrated a stud bolts equipped with or; r long nuts 46. lhe lower bloclr 43 receives the centric portion 86 of the eccer and reciprocates with relation to the li" 8 1- upon rotation of the eccentric. The lower eccentric 85 not only produces relative motion betweci the links 3-2 and the block 43 upon rotation, but constitutes support for the yoke and the main beams l0 and 41. order that the lower main beam l0 may remain stationary during the operation of the this support is accomplished by eccentric washers 4t? suitably pinned on the alined portv is of the lower eccentric and rot string in bearings formed in the upper ends GT he legs of the standard. These eccentric wasiers are so mounted on the alined portions or" the eccentric that their in alinernent with the central eccen ic portion 36: will be seen that un- 1' lion oil the lower eccentric the socull eccentric block will remain stationar wi respect to the standard w his the links will be moved with respect to both the block s3 and the standard.

The upper eccentric is a the lower eccentric but its wev merely retaining members links ant the interven in sliding enoagement. *Pl pp r main beam il wlfcl clamped to the eccentric bloclr 50 by up stud bolts 51 entering the lower block To maintain the upper and lower beams vertical alinenient with respee' to each 0: l have employed suitab interenge parts on the lower cle block 52 the upper main oeain til on the upuer clampin blocs tor the lower main beam ted means for preventing; relativ movement of the beams comprising a down. wardly projecting boss term natin cylindrical tit 54ron the lower clan block 52 for the upper main beam an registering; hole 55 in lower clamp block adapted to receive the tit. This 1 is enlarged at 56, engaging the for v distance only.

In it l l have illustrated p ir of central shear blocks A carried by she beams v -shaped dies on the right once end of the main beams adapted to produce toe pouches work on a piece of material l at The spaced bars 42 afiord a very convenient adjustable support for the eh may. be clamped at any tools used ooint as in lug. 3 by bolts 6% extended betw= he bars Where the center part or" is hollow in "be e se oi dies 62, th may 1 outside the bars and be clampi'ig slates 65.

punching operations ll npioy stripper bars 66 to hold the when the punches are moved up.

iustrated o posed angle irons 66,

3 i and 5) clamped in position on top t the clamping block it between the cl l: and the nut 67 which reenos of die bolts 45.

l gain to 1 it will be noted 1 produced by the rightmove the r -sl'1aped dies i a distance somewhat greater than that ered by eccentrics wherez'zs it will we the shears in the center approxil hall? the distance corresponding to the motion off the c entrics will move l punch at the apprc 7E1, i ielu one-filth this distance in the opde iaineter of the eccentrics designed that when be held by friction in they are moved. it,

hand end of the mais so heavy that the beams toit t hand yoke he hand yoke to bring the possible at the ter setting the left the punching tools he can operate the to to separate the beams and upon the work approximately went as available upon thand yoke. it is 'ioun'rl that a sufficient ported to operate the central on n piece of material these s be readily loosen d and slid tosee that

itive displacement of the at a piece of material.

upon the main beams 40 and ell in various positions and that practically any force up to the breaking strength 01' the eccentrics can be exerted on any tool. The range or ad- 5 justability is still further increased by makthe arms 39 of various lengths as illustrated. it is obvious that an arm oi any desired i *ngth may be mounted on either end of any eccentric in any one of a plurality of angular relationships. Less "force can be exerted by pulling on a short arm, but where the short leverage is su'flicient the short arm is quicker. A

ln Figs. 9 and 10, l have illustrated an 5 embodiment of my invention employing only a single yoke. A stationary standard 68 suitably braced by diagonal braces 69 extending to the outer end of the floor beams T0 carries the inner end of the lower main go beam "Tl clamped by bolts 72 and has a pivotal mountingin the nature or a large bolt 'i'il located only slightly above the fastening for the lower main beam Tl noon which the upper main beam T l rotates. The upper niain beam extends as illustrated approximately parallel to the lower main beam and has a downwardly extending projection built solir into en integral structure with the horizontally extending portion as illustrated in it), and adapted to receive the bolt 73. 'lhe slidahle standard 75 is generally similar to standards it) and 11 except that it carries no horizontally it may be clamped in adjusted position at any distance from ti o stationary standard so by suitable bolts and is also a support for the .lowermain beam 71. The yoke 7 6 is in all respects a duplicate of the yohes illustrated in l ig's. l; and 5 except that the lower eccentric need not have eccentric washers as the yoke is supported by the main beam instead of supporting the main beam as in the double standard machine. I have illustraced a pair oi punches 7'? located one beyond and one inside the yoke '76 and standard C 5 and a pair of stripper bars 78 similar to the stripper bars 66 in Fig. 3 extending in both *tions from the yolre.

it wi.l me ol'ivious that the smaller machine illustrated in Fig. differs from the double stanoard machine only in a number of op ations that can be simultaneously or successively performed upon it without stopto change tools as any force up to the ns: strength 0% the bolt 73 can be easily nod by suitable relati adjustment of lions the tools and the yoke.

be seen that l have provided a .ieral utility and of an extremely of adjustability. The combined the tour eccentrics of the two machines can be arranged in an finite variety of operative relaprojecting arm.

punching and shearing heavy plates or structural shapes. The entire framework and all parts of my machine are built themselves of standard structural shapes resulting in a great saving in the cost of manufao ture as well as in greater strength and reliability.

d llllQ l have illustrated and described in detail the preferred embodiment of my invention, it is to be clearly understood that the description is only for purposes of illustration and that many variations and modifications will naturally occur to those skilled. in the art. I aim in the sub'ioined claims to cover all such legitimate modifications and variations.

I claim as my invention l. A punch press comprising a pair of spaced main beams extending in approximate parallelism and a pair of mechanisms adapted to be associated with said beams at any selected'spaced points along their length to move said beams toward and away from each other.

2. In a punch press, in combination. spaced main beams, a pair of yolres embracing said beams at points spaced along the length oi said beams, each yoke comprising means engaging said beams for moving' each of said beams with respect to said yoke. whereby said beams may be moved toward and away from each other.

In a device of the class described, a pair of standards, means for clamping said sandards in any desired spaced relation, a yoke supported by each standard, upper and lower main beams supported by said yolres, and a pluralit of eccentric means associated with each yoke for moving said main beams toward and away from each other.

e. A device of the class described having, in combination, a pair of elements extending: in approximate parallelism and a pair of mechanisms adapted to be associated with said elements at any selected spaced points their length to produce a relative motion between said. elements, each of said elements l eing adapted to receive tools in clamping engagement at any point along its length.

5. A device of the class described having, in combination, an eccentric comprising cylindrical. portions having parallel spaced axes, intermediate supporting, means engaging certain of said portions, and fixed supporting: means supporting said intermediate supporting means for rotation about an axis coincident with the axis of another portion.

6. A device of the class described having, in combination, an eccentric comprising alined cylindrical portions and another cylindrical portion eccentric thereto, washers fastened to said alined portions having their outer surfaces cylindrical and concentric with the axis of said eccentric portion, and

bearing members engaging said was iers for SUJOOl'tillg said washers and said eccentric. i i device of the class described having, in combination, a pair of main beams, a yoke associated with said main beams comprising blocks clamped to said main beams, an eccentric in each of said blocks, and links extending between said eccentrics.

8. A device of the class described having,

in combination, a main beam, blocks clamped on said main beam, an eccentric, one of said blocks being adapted to receive a portion or" said eccentric, a second main beam, eccentric and blocks, said. beams being disposed with the eccentric receiving blocks on the farthest edges of said beams, and links extending beside said beams between said eccentrics, said eccentrics and links beadapted to move said beans toward and y from each other, and said links constituting guiding members for said beams.

9. ln a device of the class described, in combination, a yoke comprising spaced eccentrics and links connecting them, and a plurality of operating levers of various lengths '"or said eccenl its, each lever adapted to be associated with any eccentric any one of a plurality of different angular relationships.

16. A device of the class describedh in combination, spaced parade main beams,

a plurality of yolres associated with said main beams at points spaced along the length thereof and adapted to move said main beams toward and a vay from each other, a standard supporting each yoke, and a base supporting said standards, said yolres being slidable along mainbeams to be clamped thereon at any desired point and said standards being slidable along said base to support said yokes in any position. I

11. A device of the class described having, in combination, two standards, a member associated with each standard extending past the other standard, and means ior clamping said members to said standards to fasten said standards any desired distance apart.

12. A device of the class described having, in combination, two standards, an extension associated with each standard extending past the other standard, base comprising longitudinally extending members lying adjacent the lower extremities of said standards, and a single clamping for clamping said extensions to said. standards and said standards to said base,

13. A device of the class described having, in combination, pair of standards, means 1 venting prising links connecting spaced eccentrics,

eccentric blo ZS on each eccentric between said links, a; means for supporting said yokes-upon said standards comprising washers mounted on the Mined portions of" the lower eccentric on each yoke, the outer surfaces of aid washers being cylindrical and in alinement with the eccentric portion of said lower eccentric, said standards having bearings engaging outer portions of said washers.

15. A device of the class de; ribed having, in combination, pair of main beams e2;- tending in par 3 spaced relationship, means for clamping tools on each of said main beams at any desired points, a pair of yolrcs adapted to be associated with said main beams at any desired spaced points along the length thereof, and eccentric means carried by said yolres tormoving said main beams toward and away from each other.

in A crevice of the class described having, in combination, a pair longitudinally extending main beams each beam comprising a pair oi? rectangular elements, means for clamping the ele rents ct each beam in parallel spaced relationship, means for moving said belns toward. and away from each other, a plurality of tools adjustably clamped in no on on said beams, certain of said tools being adaptel to support a piece of work be operated upon by o her'tools, and stripper bars extending bet-ween said mainbeams p fie-l thereto and adapted to prevent said work from adhering to said last mentioned tools upon withdrawal of tools,

A device of the class described comrising spaced main beams, means including oivoted links extending from one beam to he other for moving said beams toward and from each other, and means for prerelative longitudinal movement of said beams.

18. A device of the class described comprising spaced main beams, means includpivoted links extending from one beam to the other for moving said beams toward and away from each other, and means in the nature interengaging guide members for preventing relative longitudinal movement of said beams.

1.9. A device or the class described having, in combination, spaced main beams, sets of bloclrs clamped on said beams at corre sponding points, certain of said blocks having interengaging projections andrecesses for preventing longitudinal movement of said beams.

20. A device of the class described having, in combination, spaced main beams, sets of blocks clamped on said main beams at spaced points, eccentrics operatively connected with certain of, said blocks, links eX- tending from an eccentricon one beam to sa :l

a il h-d a corresponding eccentric on another beam, and means for rotating said eccentrics.

21. A device of the class described having, in combination, an upper and lower main beam, clamping blocks on said lower main beam, an eccentric carried by the lower clampine' block on said lower main beam, clamping blocks on said upper main beam above said first mentioned clamping blocl zs, an eccentric carried by the upper clamping block on said upper main beam, links extending between said eccentrics, and means for rotating said eccentrics.

22. The combination recited in claim 21 in combination with a projection and a cooperating recess on the lower clamping block for said upper main beam and the upper clamping block for said lower main beam for preventing relative longitudinal movement of said beams.

A device of the class described having, in combination, spaced main beams, sets of coiiperating tools on said beams, means for moving said beams toward and away from each other to operate said tools, and a stripper bar attached to one of said main beams adapted to facilitate withdrawal of tools carried by the other of said main beams "from a piece of work.

2 1. A device oi the class described having, in combination, spaced main beams, means associated with said main beams at a certain point along their length for maintaining said beams a fixed distance apart at said point, means intermediate the ends of said beams and spaced from said first mentioned means for moving said beams toward and away from each other, and tools adapted to be associated with said main beams at any desired point along the length thereof whereby any desired leverage between said tools and said means for moving the beams may be obtained.

25. A punch press having, in combination, spaced main beams, yokes associated with said main beams at spaced points,

each yoke comprising spaced eccentrics and links extending between them, and eccentric blocks clamped to said main beams and operated by said eccentrics, all said parts having simple shapes made up of parallelepipeds and cylinders whereby they may be out from or readil machined out of stock material of standard shapes and sizes.

26. A punch press having, in combination, spaced main beams, yolres adapted to be associated with said main beams at any desired points along their length, each yoke comprising eccentric blocks clamped to said main beams, eccentrics in said blocks and links connecting said eccentrics, an adjustable standard for supporting each yoke, and means for supporting said standards in adjusted spaced relation, all said elements and means having simple shapes made up of parallelepipeds and cylinders whereby they may be cut from or readily machined out of stock material of standard shapes and sizes.

27. In a device of the class described, spaced main beams, and a pair of yolres embracing said beams, each yoke comprising means engaging each of said beams for moving said beams toward and away from each other, said means comprising movable members so arranged as to be trictionally held in any position into which they are moved.

28. In a device of the class described, spaced main beams, a pair of yolres embracing said beams, and a plurality of eccentric means associated with each yoke for mov ing said main beams toward and away from each. other, the eccentricities and diameters of the eccentric portions of said eccentric means bearing such a ratio to each other that said eccentric means will be held by friction in any position into which they are moved.

in testimony whereof I have hereunto set my hand.

GEORGE J. BLUM. 

